CN102351493B - Similar material for simulation injection of concrete in model test and preparation method thereof - Google Patents
Similar material for simulation injection of concrete in model test and preparation method thereof Download PDFInfo
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- CN102351493B CN102351493B CN 201110204190 CN201110204190A CN102351493B CN 102351493 B CN102351493 B CN 102351493B CN 201110204190 CN201110204190 CN 201110204190 CN 201110204190 A CN201110204190 A CN 201110204190A CN 102351493 B CN102351493 B CN 102351493B
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- rosin
- cement
- spirituous solution
- barium sulfate
- simulation
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Abstract
The invention relates to a similar material for simulation injection of concrete in a model test and a preparation method thereof. The material employs high concentration rosin alcohol solution as a binder to increase cohesiveness of the similar material for simulation injection of concrete and a model body similar material; barite powder and cement are employed as conditioning agents to control strength and elastic modulus of the material for simulation injection of concrete so as to facilitate simulation of concrete injection with different strengths and thicknesses in real constructions. The material includes, by weight, 1 part of gesso, 0.1-0.2 part of barite powder, 0-0.1 part of cement and 0.33 part of rosin alcohol solution.
Description
Technical field
The present invention relates to a kind of analog material for model trial simulation sprayed concrete, belong to materials science field.
Background technology
At present a lot of scholars come the optimization of Study of The Underground engineering design and construction method in a large number by geomechanical model test, carry out the exploration of construction process mechanics rule.But present underground project model test exists obvious not enough, generally only considers to adopt the control water paste ratio to realize mechanical similitude when the simulation sprayed concrete.But in the actual mechanical process of model trial, analog material and the model body analog material bad adhesion of simulation sprayed concrete are difficult to really play the effect of sprayed concrete in the simulation Practical Project, and perform difficulty; Intensity is difficult to control simultaneously, and the presetting period is longer, is difficult to simulate the construction speed of Practical Project.
Summary of the invention
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of analog material for model trial simulation sprayed concrete is provided, this kind material adopts the rosin spirituous solution of high density as binding agent, improves the analog material of simulation sprayed concrete and the cohesiveness of model body analog material; Adopt ground barium sulfate and cement as conditioning agent, analog material intensity and the Young's modulus of control simulation sprayed concrete are conducive to simulate varying strength in Practical Project, the sprayed concrete of different thickness.
Another object of the present invention is to provide this kind material preparation method.
The technical scheme that the present invention takes is:
A kind of analog material for model trial simulation sprayed concrete, the weight part of this kind material consists of: 1 part of terra alba, 0.1～0.2 part of ground barium sulfate, 0～0.1 part of cement, 0.33 part of rosin spirituous solution.
The weight part of this kind material consists of: 1 part of terra alba, 0.1 part of ground barium sulfate, 0.05 part of cement, 0.33 part of rosin spirituous solution.
Described terra alba presetting period≤5 minute, final setting time≤15 minute.
Described ground barium sulfate fineness is 325 orders.
Described cement is that ultimate compression strength is the ordinary Portland cement of 32.5MPa.
Described rosin spirituous solution mass percentage concentration is 20%.
A kind of preparation method who simulates the analog material of sprayed concrete for model trial comprises the following steps:
1) strictly take in proportion terra alba, ground barium sulfate, cement, rosin, spirituous solution;
2) rosin is ground into powdery;
3) the rosin powder is joined spirituous solution, heating in water bath to 30 in encloses container～40 ℃;
4) shake gently container, temperature keeps 30～40 ℃, treats that rosin is dissolved in alcohol fully;
5) the rosin spirituous solution is cooled to room temperature;
6) terra alba, ground barium sulfate, cement mixing is even;
7) pour the rosin spirituous solution in the material that mixes, uniform stirring 5～10 minutes.
A kind of analog material for model trial simulation sprayed concrete of the present invention adopts the rosin spirituous solution of high density as binding agent, improves the analog material of simulation sprayed concrete and the cohesiveness of model body analog material; Adopt ground barium sulfate and cement as conditioning agent, analog material intensity and the Young's modulus of control simulation sprayed concrete, material significant parameter scope such as table 1, the stress-strain(ed) curve under single shaft resistance to compression condition such as accompanying drawing 1:
Table 1
A kind of analog material for model trial simulation sprayed concrete of the present invention, technical scheme and the preparation method of the analog material of simulation sprayed concrete in the available model test have been studied, traditional spray-up concrete analog material and model body analog material bad adhesion have been solved, the unmanageable problem of intensity.The analog material of simulation sprayed concrete is applied in model trial, compares with forefathers' research, more approaches engineering practice, drawn geomechanics likeness in form model investigation achievement is more accurate.
The present invention selects terra alba, ground barium sulfate, cement, rosin, spirituous solution as moiety, and wherein, terra alba is as main aggregate, and the requirement of its mechanical property and model trial material is more approaching, and after its chance water, the cohesiveness of itself is better; Ground barium sulfate as conditioning agent, is mainly the severe of regulating analog material, makes analog material satisfy the requirement of similarity principle; Cement as additive, is the intensity of regulating analog material; The alcohol rosin solution of high density is as binding agent, outside the cohesiveness and intensity that improve material self, the more important thing is to have improved and simulate the analog material of sprayed concrete and the cohesiveness of model body analog material, traditional spray-up concrete analog material and model body analog material bad adhesion have been solved, the unmanageable problem of intensity.In addition, by regulating the proportion of ground barium sulfate and cement, can increase the variation range of analog material mechanics parameter, greatly improve the range of application of simulation sprayed concrete analog material.
The present invention proposes the technical scheme of the analog material of simulation sprayed concrete in model trial, have the following advantages:
1, can realize the bonds well of the simulation concrete analog material of spray-up and model body analog material;
2, can regulate intensity and the Young's modulus of the concrete analog material of simulation spray-up, simulate varying strength in Practical Project, the spray-up concrete of different thickness;
3, can control initial set and final setting time, realize the construction speed of simulation Practical Project.
Description of drawings
The stress-strain curve diagram of the sample of Fig. 1 material under single shaft resistance to compression condition.
Specific implementation method
The present invention is further described below in conjunction with embodiment.
Presetting period≤5 of the terra alba that the present invention is used minute, final setting time≤15 minute; The fineness of ground barium sulfate is 325 orders; Cement is 32.5 cement; Rosin spirituous solution mass percentage concentration is 20%.
A kind of analog material for model trial simulation sprayed concrete, its weight ratio consists of: 1 part of terra alba, 0.1 part of ground barium sulfate, 0.05 part of cement, 0.33 part of rosin spirituous solution.
The preparation method comprises the following steps:
1) strictly take in proportion terra alba, ground barium sulfate, cement, rosin, spirituous solution;
2) rosin is ground into powdery;
3) the rosin powder is joined spirituous solution, heating in water bath to 40 ℃ in encloses container;
4) shake gently container, temperature keeps 40 ℃, treats that rosin is dissolved in alcohol fully;
5) the rosin spirituous solution is cooled to room temperature;
6) terra alba, ground barium sulfate, cement mixing is even;
7) pour the rosin spirituous solution in the material that mixes, uniform stirring 10 minutes.
A kind of analog material for model trial simulation sprayed concrete, its weight ratio consists of: 1 part of terra alba, 0.1 part of ground barium sulfate, 0.1 part of cement, 0.33 part of rosin spirituous solution.
The preparation method comprises the following steps:
1) strictly take in proportion terra alba, ground barium sulfate, cement, rosin, spirituous solution;
2) rosin is ground into powdery;
3) the rosin powder is joined spirituous solution, heating in water bath to 40 ℃ in encloses container;
4) shake gently container, temperature keeps 40 ℃, treats that rosin is dissolved in alcohol fully;
5) the rosin spirituous solution is cooled to room temperature;
6) terra alba, ground barium sulfate, cement mixing is even;
7) pour the rosin spirituous solution in the material that mixes, uniform stirring 10 minutes.
A kind of analog material for model trial simulation sprayed concrete, its weight ratio consists of: 1 part of terra alba, 0.2 part of ground barium sulfate, 0 part of cement, 0.33 part of rosin spirituous solution.
The preparation method comprises the following steps:
1) strictly take in proportion terra alba, ground barium sulfate, cement, rosin, spirituous solution;
2) rosin is ground into powdery;
3) the rosin powder is joined spirituous solution, heating in water bath to 30 ℃ in encloses container;
4) shake gently container, temperature keeps 30 ℃, treats that rosin is dissolved in alcohol fully;
5) the rosin spirituous solution is cooled to room temperature;
6) terra alba, ground barium sulfate, cement mixing is even;
7) pour the rosin spirituous solution in the material that mixes, uniform stirring 5 minutes.
Claims (3)
1. an analog material that is used for model trial simulation sprayed concrete, is characterized in that, the weight part of this kind material consists of: 1 part of terra alba, 0.1 ~ 0.2 part of ground barium sulfate, 0 ~ 0.1 part of cement, 0.33 part of rosin spirituous solution;
Described terra alba presetting period≤5 minute, final setting time≤15 minute;
Described ground barium sulfate fineness is 325 orders;
Described cement is that ultimate compression strength is the ordinary Portland cement of 32.5MPa;
Described rosin spirituous solution mass percentage concentration is 20%.
2. according to the analog material for model trial simulation sprayed concrete claimed in claim 1, it is characterized in that, the weight part of this kind material consists of: 1 part of terra alba, 0.1 part of ground barium sulfate, 0.05 part of cement, 0.33 part of rosin spirituous solution.
3. according to a kind of preparation method who simulates the analog material of sprayed concrete for model trial claimed in claim 1, it is characterized in that, comprise the following steps:
1) strictly take in proportion terra alba, ground barium sulfate, cement, rosin, spirituous solution;
2) rosin is ground into powdery;
3) the rosin powder is joined spirituous solution, heating in water bath to 30 in encloses container ~ 40 ℃;
4) shake gently container, temperature keeps 30 ~ 40 ℃, treats that rosin is dissolved in alcohol fully;
5) the rosin spirituous solution is cooled to room temperature;
6) terra alba, ground barium sulfate, cement mixing is even;
7) pour the rosin spirituous solution in the material that mixes, uniform stirring 5 ~ 10 minutes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110204190 CN102351493B (en) | 2011-07-20 | 2011-07-20 | Similar material for simulation injection of concrete in model test and preparation method thereof |
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| CN 201110204190 CN102351493B (en) | 2011-07-20 | 2011-07-20 | Similar material for simulation injection of concrete in model test and preparation method thereof |
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| CN102351493A CN102351493A (en) | 2012-02-15 |
| CN102351493B true CN102351493B (en) | 2013-06-05 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106746921A (en) * | 2016-12-11 | 2017-05-31 | 中国人民解放军理工大学 | A kind of recycling method of the cementing analog material of rosin |
| CN107101867B (en) * | 2017-05-25 | 2020-07-31 | 山东大学 | Coal bed karst collapse column water inrush model test analog simulation material and preparation method thereof |
| CN108706914B (en) * | 2018-06-04 | 2021-01-12 | 浙江科技学院 | Material capable of simulating properties of freshly mixed cement mortar |
| CN109061117B (en) * | 2018-06-04 | 2021-04-13 | 浙江科技学院 | Material capable of simulating properties of fresh concrete |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792990A (en) * | 2005-11-23 | 2006-06-28 | 山东大学 | Iron spar powder, guartz sand cement rock-soil similar material and preparation process thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792990A (en) * | 2005-11-23 | 2006-06-28 | 山东大学 | Iron spar powder, guartz sand cement rock-soil similar material and preparation process thereof |
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